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-rw-r--r--gcc/config/aarch64/aarch64.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/gcc/config/aarch64/aarch64.c b/gcc/config/aarch64/aarch64.c
index e222ee37cf2..0400fd503d2 100644
--- a/gcc/config/aarch64/aarch64.c
+++ b/gcc/config/aarch64/aarch64.c
@@ -7770,6 +7770,10 @@ aarch64_madd_needs_nop (rtx_insn* insn)
return false;
prev = aarch64_prev_real_insn (insn);
+ /* aarch64_prev_real_insn can call recog_memoized on insns other than INSN.
+ Restore recog state to INSN to avoid state corruption. */
+ extract_constrain_insn_cached (insn);
+
if (!prev || !has_memory_op (prev))
return false;